Pipe-cutting mechanism.



No. 680,443. Patented Aug. I3, |9o|.

F. w. sTAPF. PIPE CUTTING MECHANISM.

(Application tiled Efeb. 14, 1901.) (nu Model.) ,l L 4 sheets-sheet l'.

Sb EL wxTNEssEs 1 Patented Aug. 13', |901- F. w. sTAPF. 1 j PIPE CUTTINGMEGHANISM.

(Application med Feb. 14, 1901.)

I Patented Aug. I3, |901. F. W. STAPF.

PIPE CUTTING MECHANISM.

` (Application alea'reb. 14, 1901.)

4 Sheets-Sheet 3.

(No Model.)

- INVENTOR ATToRNEY No. 680,443. Patented Aug. I3, |9ol.

F..W. STA-PF. PIPE'CUTTING MECHANISM. (Applicationv @lea Feb. 14, 1901.)

` 4 Sheets-Sheet 4.

(No Model.)

WITNESSES: A ,Q7/(VZ illustrated in the accompanying drawingsand To,ctZZ whom, t 71mg/ concern:

of the cutting mechanism at the proper point lmal position. l

-UNTTED STATES PATENT i OE'FTCE.

FREDERICK .Wj sfr/YPF, OF BROOKLYN, NEW YORK, AssIG'NOR To JOHN A.

WILEUR, or NEW YORK, N. Y.

`PIPE-CUTTING MECHANISM.

srEcIrIcAcrroN forming part @fretten meent No. 680,443, dated ingest 13,1901.

' ppncanon ined February 14,1901. senti No. 47.298. (No matti 13e itknown that I, FREDERICK W. STAFF, a citizen of the United States, and aresident ofthe borough of Brooklyn, in the'cityof New York, State ofNevp7 York, have invented new and useful Improvements in Pipe-'CuttingMechanism, of which the following is a speci# ication, referencebeinghad to the accom panying drawings, forming part thereof.

Thisinven tion relates to pipe-cutting mechanism; and it consists in theprovision of automatic means for cutting pipes in predetermined lengths.f

The means embodying my` invention are constructed'fo'r use in connectionwith a pipemaking machine, and according to my invention the cuttingmeans are moved longitudinally with the pipe as the pipe is fed forwardyin the pi pe-makin g machine, and the position and actuation of thepipel required for the v pipe-making operation are notin any Way disturhed yor altered, so that the operation of the pipe-making machine isnot interrupted while the pipe is being cnt. According'to my in ventiona controller is provided o f improved construction actuated by thepipe', and this controller automatically starts the actuation to cut offthe predetermined length of pipe.

My invention vfurther consists in the provision of one or more'cuttersautomatically actuated in a circular path about the pipe `andautomatically controlled, so as to perform the cutting Operation,and,further, in reciprocating suchy cutter or cutters in such circularpath.

My invention. further consists iu the provision of means of improvedconstruction for automaticallycontinuing/the actuationof the cuttingmeans for a .predetermined period and then discontinuing the actuationof the same and returning the cutting means to rior- My inventionfurth'erconeists in various improvements infvconstruction andcombinations ot parts and'hasvarious objects and advantageous"features,which will hereinaftermore fully appear.

.I will'noivfdescriber'` a-constructinpof pipecutting mechanismembodying my invention point out the novel features 'elevation ofthecutter-head and-.adjacent parts.

Fig. 4 is a front elevation of thev rear standard and adjacent parts.Fig. 5 is a def 6o tail of the middle cutter-block and adjacent parts.-Fig. 6 is a rear elevation of the rear standardand showing theconnection with thepipe-making machine. Fig. 7 is'anenlarged detail sideelevation of part of the ac-v tuating' mechanism. Fig. 8 is a plan Viewof p the same. j The pipe cutting ,mechanism embodying my invention'shown in the accompanying:- dra-wings is particularly adapted for use in7o connection with the well-known spiral-jointedI-pipe-making machinedescribed in patent y to John Root, No. 271,740, of February 6, 1883.

The pipe 2 is formed upon a mandrel and 75 intermittently rotated andfed forward, and my pipe-cu ttin g mechanism is constructed to cu't oithe pipe in predetermined lengths as it is thus rotated and fed forwardWithoutinterruption to the-Operation of the pipe-mak- 8o ing machine.Motion is imparted to my pipecutting mechanism from the oscillatingframe of such machine, and the operation of the pipe-cutting mechanismisautomatically controlled, so as to start the same at the desired pointto cut oftthe predetermined length of pipe and to return the same tonormal position4 after the completion of each cutting operation ready tobe operated at the proper time to cut off the succeeding length of pipe.v9o

lI"Will firstdescribe the automaticmeans for starting the operation ofthe cutters.

A controller is provided which engages the endof the pipe, suchcontroller consisting ofv apivoted controlling-arm 3, located so as to'project in the path of the advancing pipe and securedupon a shortvertical shaft 8, mount ed in a bearing on a .bracket 4, this 'bracketbeing yadjustably held upon a column 5 and this column extending upfroman adjustable roo plate 6, which is longitudinally adjustable upon asuitable bed-plate. (Notshown.) The longitudinal adjustment of the platepermits the position of the controlling-arm to be adju-sted to set thecutting mechanism to cut off different lengths of pipe and the verticaladjustment of theV bracket e permits the vertical adjustment of thecontrolling-arm 3, where such adjustment is necessary to accommodatedifferent sizes of pipe.

Upon the shaft 8 of the controlling-arm 3 is secured a pinion 9, meshingin a gear 10, fitted to oscillate upon the frame Li,and`a connecting-rod11 is pivotally mounted upon a crankpin l2 on the gear'lO,this-crank-pin being vertically adj ustalble to accommodate the vertical.adjustment of the arm and bracket and the connecting-rod 1lbeinig'longitudinally adjustable toac'commodate the longitudinaladjustinen't f the arm 3. The connecting-rod 11 extends rearwardhnd ispivotally'connected at its rear end to a shifting rod 13', fitted toslidein bearin'gsin fixed standards 14 and 15, and Awlienthe advancingendof the pipe 2 strikes the controlling-arm 3.and moves the f arm out'ofits path the shifting rod 13 vis' moved forward; The shifting rod 13is connected at its rear end by a connecting-rod 16 j with an engagingpart, consisting of al1-oscillating hook 17, lloosely mounted on avertical shaft 18, fitted in bearings in the standard '15. A. gear 19 issecured upon this vertical shaft 18 and has an upwardly-extendingcrank-pin 20, which is engaged by the oscillating hook 17. Upon this'crank -pin 20 is pivotally mounted a connecting-rod 21, extendingforward to and pivotally connected with another shifting rod 22,alsotitted to slide in the standards 14 and 15 and shown as'ar'rangedbelow the shifting rod 13. The hook 17 is constructed toengage with thecrank-pin 2O and move it forward when the upper shifting rod 13 is movedforward by the controlling-arm 3, and thereby to actuate the lowerconnecting-rod 2li and lower shifting rod 22 in the same direction; butwhen the 'upper shifting rod 13 is moved rearward theV hook 17 movesaway from the crank-pin 2O and does not actuate the crank-pin and lowershifting rod 22. (Seev Figs. 7 and 8.) The gear-wheel 19 meshes with apinion 23, secured upon a vertical shaft 24, fitted to oscillate inbearings in the standard 15, the greater part of the length' of whichshaft is eccentric to its axis, and which eccent'ric shaft actuates alock-arm 25, pivotally mounted in a block 26,t-he block 26 being fittedY to slide in vertical ways in the standard 15 and actuated by theconnecting-rod 27 from some suitable part of the pipe-making machine, asthe arm 28, extending from the oscillating frame IjI thereof. g Thissliding block 26 is thus ,continually reciprocated so long as thepipe-making machine is operated. Above the sliding block 2vis anothersliding block 29, and the lock-arm 25 is constructed'to engage therewithto lock the two sliding blocks 25 and 29 together, so that the motion ofthe lower sliding block 26 will be communicated vstandard 15. ated-by areversible p'awl 35, centrally pivto the upper sliding block 29, aspring 30` tending to press the lockarm 25 into engaging position andthe eccentric shaft 24c holding the lock-arm normally out of engagement.Whenthe eccentric shaft 24: is actuated as a result of the actuation ofthe controlling-arm 3, as above described, the eccentric shaft 24 isrotated throughhalf arevolution and moved out of the path of theAlock-arm 25, and the lock-arm is pressed inwardly by its spring, andupon rising to higherpositiou moves into engagement with the slidingblock 29 and locks the two sliding blocks together. This operationstartsthe actuation of the cutting mechanism. The mechanism thus actuatedcomprises cutting means and feeding means.

The feeding means comprises a feed-screw 3l, having a thrust-impartingbearing at its front end in the cutter-head 32 and rotating in a fi'Xednut 33, and by its' rotation feeding the cutter-head forward androtating and sliding in a bearing in the standard .15.and.

having a ratchet-wheel 31 splined thereon, so as to rot-ate thefeed-screw, but 'not to partake of its longitudinal movement, thisratchet-wheel 34 being restrained from longitudinal movement byengagement with the Theratchet-wheel is actuoted in the oscillating armL12, actuated as hereinafter described, and the pawl is constructed sothat in one position, with its tooth 3G engaged with the ratchet-wheel31, it will rotate the feed-screw 31, so as to feed, the

vcutter-head forward with the pipe 2, and in the-reverse position, withthe tooth 37 in engagement with the ratchet, which is the normalposition shown, it will rotate the feedscrew, so as to feed the`cutter-head backward to return the cutter-head to-normal position,

'and the pawl 35 is rocked from oneposition to the' other andspring-actuated in either position by the controlling-spring 38, carriedin a horizontally-moving slide 3). The slide 39 is actuated by the uppershifting rod 13 through a bell-crankLtO, engaging with a stud thereonand with anA arm 41, projecting from the upper shifting rod, and whenthis shifting Vrod is actuated by the controlling-arm 3 and movedforward it will actuatc the slide IIS 39 and controlling-spring 3S andreverse the A pawl 35 from the normal position in Awhich it was leftatthe conclusion of the last backward movement of the cutter-head 32 tothe position for causing a forward movement of the cutter-head.-

The oscillating arm 42, carrying the reversible feed-pawl 35, iscomposed of two similar parts, one on eachy side of the feed-ratchet 3iand pivoted thereon and is actuated by the bell-crank 60,-pivoted uponthe standard 15, j

one arm of which extends down to and has a slotted engagement with thefeed-pawl arm, and the other arm of which extends laterally and' isjoined by the-connecting-rod 43 with the upper sliding block 29, so thatit receives an oscillating movement therefrom when the,`

upper block 29 is locked ,'the lower block 26.

By the mechanism above described the lfeed-screw 3l will be rotated soas to feed the cutte'rfhead 32, forward when the,c ontrol ling-arm 3 isactuated by the advancing end to and actuated by of the pipe, andthis-forward movement will predetermined time, :tmv be continued for aply sufficient t'o insure cutting through the pipe.

of rotation of the'feed-'screw 3l', I provide' a reversing-collar71,'adjustab1yseeured upon a rod 72,-.thisi` rodbeing secured at itsfront end in the cutter-head 32, so'as to-inove therewith. Thisreversing-collar has a projection 73,.l which as it moves 'forward withthe cntter-head comes in contact with and moves 4, secured on avertical4 forward Ythe arm 7 shaft 75, this shaft 75 having bearingsinthe front standard 14, and anothera'rm'zf on this shaft 75 .isactuated thereby and moves rearwardly the uppershifting rod 13 byengagement-with'an adjustable -collar 77 on such upper shifting rod, andthereby reverses the feed-pawl 35, so that the. back-feed tooth 37 ismoved into operative position and moves the hook 17 back to the normalposition shown,

but does. not actuate the crank-pin20 on the gear 19, and does nottherefore unlock the two sliding blocks 26 and 29. This movement alsoreturns the controlling-arm 3 to normal position, and kas the euttershave new through the pipe and the severed length dropped off or has beenremoved there will be no obstruction by the pipe'to such movement ofthecontrolling-arm. The feed-'serew 3l is now actuated in the reversedirection and thel cutter-head 32 moved rearwardly thereby. Thisoperation will be continued until the projeetion73 on thereversing-eollar 7l comes in contact with and moves rearwardly the stoparm 78, projecting from the' lower shifting rod-22, therebynioving thevcranlvpin 20 rearwardly andfa'ctuating the gears 19 and 23 and turningthe `eccentric shaft 24 thigough hal-t a revolution, so as to.

force the lock 25 o utof engagement with the upper sliding block 29,thereby discontinuing the actuation of the upper sliding block and andof all parts of the cutting mechanism.

As the stop-arm 78011 the lower shifting rod 22 is moved forward by thelowershifting rod when the'lowershit'ting rod is moved forward by theactuation of the controlling-A arm 3 to start the forward. movement o fthe cutting mechanism, I provide for lifting the stop-arm 78 clear ofthe projection 73 when the c utter`head is `in extreme backwardpositionby means of a pivoted lateh'79, having an arm extending underthe stop-arm 78 and another arm engaged byihepivoted lever 80,

this lever being actuated by arcar projection-ontho reversirig-collar7l.. The stoparm 78 is'councci ed to'tho -lowor shifting rod For thepurpose of reversingthe f eedpawl 35, and thereby reversing thedirection iii' `from the crank-disk 51.

on which it is mounted, so as to 'be capable of swinging upward slightlythereon under control of the spring Sl, but 4is confined by collars, soasl to move longitudinally with the shifting rod.

The cutting means comprise rotary cutters and means for actuating' themtobi-ing them in to contact with the pipe, to oscillatc them about thepipe, and to press them against the pipe with a constant pressure, sothat they maybe fed inward as they cut'throughthe pipe and toret'urnthem to normal posi# tion`v out of contac-t with the pipeafterthecompletion of cach cutting operation.. Threel of these rotarycutters.arc shown, each cons-isting of a rotary cutting dishA 44,secured upon the rear end ofa short shaft having a pulley 47 at itsfront end and carried in bearings in a cutter-block` 45, tted to slideradially to .the pipe. 2 in ways in the oscillating carrier 40, `thisoscillating carrier being iitted in an arc-'shaped 'sliding bearing'formed in the cutter-head`32 concentrieally with the'pipe and receivinga reciprocating circular movement .in this bear-ing from the meanshereinafter described. Each of 'the'cutter-blocks 45 has aconnecting-rod 48, pivotally connected at its inner end to an adjustableblock 4),adapt.-

ed to slide upon thecutter-block 45 and'held relatively thereto by anadjusting-screw 50.

The connecting-rod 48 of the middle cutterv l 44'is pivotallyconnectedat .its outer end to the crank-disk'l on the carrier, and theconnecting-rods 48' 48 of the/two other cutters are respectivelyconnected Y at their 'outer endsto bell-cranks 52 52, which respectivelyIOO receive motion through connecting-rods 523 The crank-disk 5lreceives motion from a bell-cran k 54, pivoted upon a bridge-piece 55 onthe carri-m46, a downwardly-extending arin of which bellcrank 54 has aslotted connection witha pin oupon a horizontally-nioving slide 57,.sliding in ways on the cutter-head 32, this slide being-actuatedthrough a connecting-rod 58 from a friction-disk 59, mounted upon thefront end of the feed-screw 3l and having a frictional engagementtherewith. lVhen thc feed-screw is rotated, its first movement in',either direction will actuate the slide 57. in

the normal position shown the cut-ters 44 are .clear of the pipe. lVhenthe controlling-arm 3 is actuated, and iu'eonsequence thereof thefeed-screw 3l is rotated, the-slide 57 will 'be actuated and willactuatethe bell-crank 54' partsl to' and slide 5771 provide adjustablestop-screws Gl 6l in lugs projecting from the cutter-head .32 and a stopprojection G2 extending downward from the slide 57 between thestopscrews 6l G1. A

The cutters 4i are shown as rotated by a belt 63, passing over all ofthe pulleys -17 on the cutter-shafts, and this belt passes inside the uppcrcutter-pulley,outside the middle cutter-p ulley,and inside the lowercutter-pulley, and as its tension Will cause a pull directly iuward tobe imparted to the middle cutter and pulls obliquelyoutward to beimparted to the upper` and lower cutters and the cutters are allconnected together by the mechanism above described thetension of thisbelt will be nearly if not completely balanced and will not thereforeinterfere with 4the proper movement lof the cutters toward and from theaxis of the pipe. This belt would also be passed over a driving-drum(not shown) of sufficient length to permit the belt 63 to follow theaxial movement of the cutter-pulleys resulting from.

the movement of the cutter-head.

The oscillating arc-shaped cutter-carrier i6 is actuated by aconnecting-rod 63, pivoted at its upper end upon a pivot-pin 64,projecting rearwardly from the carrierll through aslot in thecutter-head. The lower end of the connecting-rod 63 is piyotallyconnected atits lower end to an arm 65 on an oscillating shaft GG,fitted at its front end in a bearing in the cutter-head BZ-and heldtherein, so as to move. longitudinally with the cutter-head, andexvtending rearward through a guide-bearing in the rear standard 15 andhaving an actuating-arm (57 splined thereon, so as to impart oscillatingmovement thereto, but restrained from longitudinal/movement byengagement with the standard l5. This actuating-arm is joined by aconnecting-rod 68 tothe lateral arm of the bell-crank GO, which, asabove described, is joined by a connecting-rod 43 With the upper slidingblock 29V. Adjustment of the throw of the actuating-arm 67 and cut-`ter-carrier lfactuated thereby, is Vprovided by making the pivot-pin(S9-therein of the connecting-rod (i8 adjustable in a slot on the arm,and adjustment of the throw of the feedpawl 35 is provided by making thepi vot-pin 70 of the two connecting-rods G8 andV 43 in the lateral armof the bell-crank 60 adjust- 1 able in a slot in .this arm.

The actuation of the arc-shaped cutter-carrier 46 vby the mechanismabove described` causes the cutters 44 to have a limited circularreciprocating movement about the pipe, and as the pipe. isintermittently rotated in one direction by the pipe-making machine thecutting -action will thus be properly distributed -andwill 'extendaround the 'entire periphery of the pipe. As the cutters are at the sametime continuously rotated on their own axes and pressed inward to theirWorlr the cutting action will be effective and clean.

It is obvious that various 'modifications maybe made .in theconstruction shown and nation with one or more cutters, of a control-`ler located in the path of the pipe and having a xed pivotal point andconstructed to be actuated by the pipe and moved completely out of thepath ot the pipe and by such movement to actuate'the cutter or cutters,substantially as set forth;

3. In a pipe-cuttin g mechanism, the combination with one or morecutters, of acontroller located in the path of thel pipe and constructedto be actuated bythe pipe and moved out of vthe path of the pipe andymeans controlled thereby for moving the cutter or cutters into contactwith the pipe and actuating the same to cut` the pipe and for feedingthe cutter or cutters longitudinally of the pipe I during the cuttingoperation, substantially as set forth.

4. Ina pipe-cutting mechanism, the combination with one1 or morecutters, and atraveling cutter-head carrying the same of a coutrollerlocated in the path of the pipe and constructed to be actuated by thepipe and moved out of the path ofthe pipe and thereby to cause thestarting ymovement of the cutterhead, and means for continuing andcompleting suchmovement and'for moving the cutter or cutters intocontact with the pipe and actuating the same to-=cutthe pipe,substantially as set forth.-y

45. In a pipe-cutting mechanism, the combi- 'nationiwith one or morecutters, of means for moving the Tcutter or. cutters in a circular pathabout the pipe and for feeding the cutter or cutters longitudinally ofthe pipe during the cutting operation, substantially as set forth.

nation with one or morecutters, of a controller adapted to be actuatedby the pipe and means controlled thereby for moving the cutter orcutters in a circular path about the 6. In a pipe-cutting mechanismhecombi ICU IIO

pipe and for feeding the cutter or cutters longitudinally of the pipeduring the cutting operation, substantially as set forth.

'7. In a pipe-cutting'mechanism, the combination with one orm'orecutters, a carrier for the same, and atraveling cutter-head inwhich the carrier is yfitted for circular movement about the pipe, ofmeans for actuating the carrier and cutter or cut-ters and feeding the`cutter-head longitudinally of the pipe during the cutting. operation,substantially as set forth.

8. In a pipe-cutting mechanism,- the combiso v reclprocating the cutteror cutters in a circu` nation with one or more cutters, a carrier-for'thc same, and a traveling cutter-head in which the carrier is fittedfor circular movement about the pipe, of a controller adapted to beactuated by the pipe to causethe starting `movement of the'cuttcr-headand carrier and cutter or cutters, and means for continuing A.and'complet-ingsnch movement,substantially 1Q g l nation, a pluralityof cutters, cutter-blocksy blocks,

means for actuating the cutter-blocks adapted l ler the pipe during thecutting cular path about the about the pipe,

as set forth.

9. In a pipe-cutting mechanism, in combifor actuating thecutter-blocks,- adaptedto move the cutters toward and from the pipe, acarrier for the cutter-blocks, and automatic means forAre'ciprocating'the carrier'in a ciroperation', substantially assetforth.-

10. In a pipe-cutting mechanism, in combination, 'a plurality of cuttersand cutterin Which the cutters are mounted, and

to move the cutters toward and from the-pipe, a carrierforthecutter-blocks, and means for moving the carrier circularly aboutthe'pipeand for feeding the carrier .longitudinally .-of, the pipe during thecutting operation, sub-v stantially as set forth.

11. In a pipe-cutting mechanism,the combination with one or morecutters, of means for lar path about the pipe and for feeding the cutteror cutters longitudinally of the pipe during the cutting asset forth.

12. Inapipe-cutting mechanism,the combination with one or more cutters,of a controladapted to be actuated by the pipe and means controlledthereby for reciprocating the'cutter or-cutters i'n a circular pathabout thel pipe and for feeding the cutter or cutters4 stantial'ly asset forth.

14. Inapipe-cuttingmechanisrmthecombi-y `'movement of the cutting meansto disconnation with one or more cutters, acarrier for the saine and atraveling cutter-headn which the carrier is fitted forlcircular movementabout the pipe and means for tlie carrier, of a Vcontroller adapted tobe actuated by the pipe tocause the'starting movev ment of thecutter-'head and carrier and cutter or cutters, and means for continuingand completing such movement, substantially as set forth.

l5. In a pi pe-cutting 1nechauism,the combination with cutting means'andfeeding means, the feeding means being-constructed to feed 1n which thecutters are mounted, and means pipe to effect a cutting a shiftingymechanism and an engaging operation, substantiallyl cutter-headlongitudinally of operation, sub-- reciprocating 'to shift the feedingand the cutting meanslongitudinall of 'the pipe,

of a controller adapted to be-actuated bythe pipe, a shiftingmechanism'conuected therewith and constructed to shift the feeding andcutting mechanism to.actuatingconditionfor the forward movement thereof,and reversingmeans brought into' action .by-the, 'forward feedingmechanism ,and` cutting mechanism inc'ondition for the-backwardmovement',

thereof, substantiall'yas set forth.

.movement of the cutting means tov put the 1.6. A pipe-cuttingmechanism,l in combi nation, Vcuttingmeans aud feeding means and'.'actuating mechanism for the-same, the feeding means being'construct'edto feed thecutting' means longitudinally of the pipe, a con-vtrolleradap'ted to be actuated by the pipe and p v part actuated by thecontroller, the shifting mechanism being actuatedfby-suc-h controller toating condition for the forward movement thereof vand the engaging partbein-g actuated by-the controller to engage and start .the 'actuatingmechanism,vreversing means-brought -into action by the forward movementof lthecutting -means to'actuate the sl1iftingmech shift thefeedingand-cuttingmeans to actu.-

.anis-m and engaging part in the reverse'dircc-- tion and there by toput the feeding means and cutting means lin condition for the backwardmovement thereof, and means brought into action by the reversemovementof the cutting" I Ineens to discontinue the actuation ot' theac- 'tuating mechanism,substantiallyas set forth.

1 7. In a`pipe-cutting mechanism, in co'mbination, cutting means andfeeding means'and actuating mechanismfor-the same,.the feedtofeed-the-cntving means being constructed ting means longitudinally Ijestroller'adapted to be actuated by the pipe and a shifting rod and a hookactuatedbythe con`l -troller, means actuated by such shiftiugrod t'oshift the feeding and cutting means to ac-.'

tuating condition for the forward movement thereof, such hooK hein gactuated by the 1rol controller to engage and start the. actuatingmechanism, reversing means 'brought l'nto action by the forwardmovement'of the cutting means to move the vshiftingrod and-hook inl thereverse direction-, thereby putting the feeding means and cuttingmeansin'condi- 1 tion lfoi the backward movement thereof, and meansbroughtinto: action by the'rcverse tinue the actuation ot' the actuatingmechanting means longitudinally ofthe pipe, a controller adapted to beactuated by the pipe'and troller, means actuated vby'such Yshifting rodtuating condition for the 1forward movement a shifting rod and a' heckactuated by the conf cutting'means to ac-;

thereof, means engaged by such hook to start the actuating mechanism,reversing means brought into action by the forward movement of thecutting means to move the shifting rod and hook in the reversedirection, thereby putting the feeding meansand cutting meansin'co'ndition for the backward movement,A

thereof, and another shifting rod connected to the starting means'of theactuating mechanism and actuated by the reverse movement of the cuttingmeans to discontinue the actuation of the actuating mechanism,substantially as set forth. y

19. In a pipe-cutting mechanism, the combination with cutting means andfeeding means, the feeding means being constructed fo feed the 'cuttingmeans longitudinally of the pipe, of a controller adapted to be actu-`ated by the pipe, an actuating part adapted to he continually actuatedand meansconnected to the controller for connecting such actuating partwith the feeding and cutting mechanism, substantially as set forth.

20. lu a: pipe-cutting mechanism, the combination with cuttingmeans and`feeding means, the feeding means being constructed io feed the cuttingmeans longitudinally of the pipe, of a controller adapted to be actuatedby the pipe, an actuating part adapted to be contiuuallyactuated, andmeans connected to the cont-roller for connecting such actuating partwith the Afeeding and cutting 'mechanism and means'independent of thecontroller for disconnecting such actuating part from the feeding andcutting mechanism, substantially as set forth.

l 2l. In a pipe-cutting mechanism, the com-f bination with cutting meansand vfeedingmeans,'the feeding means being constructed to feed thecutting means longitudinally of the pipe, of a controller adapted to beactuated by the pipe, an actuating part adapted to be continuallyactuated, means connected to the feeding and cutting mechanism, alocking partconstructed' to lock the actuating part thereto, a hookconnected with the controller and constructed toput the'vlockiug partinto condition for engagement when the vcontroller is actuated by thepipe, means contuated by the pipe, means connected thereto i @sones forreversing the pawl and means controlled by the controller for actuatingthe feed-paul and cutting means, substantially as set forth.

23. ln a pipe-cutting mechanism, in coinbi nation, a cuttenhead andcutting means cai`- ried thereby, afeeding device connected to thecutter-head and a feed-ratchet constructed to actuate the feedingdevice, a reversible pavvly therefor, a spring for said pawl constructedto reverse the saine and control 'its movement Vin either position, acontroller adapted to he actuated by the pipe, means connected theretoand controiling the feedpawl spring and means controlled by thecontroller for actuating the feed-paul and out? ting'mcans,substantially as set forth.

2llna i e-cuttino mechanism in combi D s i nation, a cutter-head andcutting means carried thereby, a feed--screw connected to thecutter-head, a feed-ratchet constructed to actuate the feed-screw, ,a'reversible pavvl therefor, a controller adapted to be actuated kby thepipe, meansconnected'thereto for reversing the pawl and means controlledby the controller for actuating the feed-parti and cutting means,substantially as set forth.

25. In a pipecutting mechanism, in combination, a cutter-head andcutting means carried therein/,a feed-screw connected Vto thecutter-head, a controller adapted to oe actuated by the pipe andcontrolling the means for actuating the feed-screw, a frictionideviceconnected to the feedfscre'w and means' actuated thereby to pnt thecutting means into operative position when the feed-screw is actuated inone direction and to Withdraw the cutting means from operative positionl when the feed-screwis actuated in the reverse direction, and meanscontrolled by the con troller for causing the actuation of the feedingmechanism, substantially as set forth,

26, In a pipe-cutting mechanism, in combination, one or more automaticfeeding and' actuating cutters, means for actuating the same to move thecutter or cutters into contactwith thepipe and press the cutter orcntters against the pipe with a constant pres'- sure and for moving thecutter or cutters.

away from the pipe after the completion of the cutting operation,substantially v as set forth. y

27. Ina pipe-cutting mechanism, in combi nation, one -or more cutters, acarrier for the same and automatic means foi-'moving the cutter orcutters into contact with the pipe and pressing the cutter or cuttersagainst the pipe with a constant press-ure and reciprocating the carrierin a circular path shout the pipe to effect the cutting 'oper-ation',sub stantially as set forth. p

2S. In a pipe-cutting mechanism, in combination, one or more cutters,acarrier for the same, a friction device for moving the cutter orcutters into contact with thepipe and pressingthe cutter or cuttersagainst the IOC tog

pipe and' means-for moving the earrier iufa for feeding the cutter -orcutters longitudi- Io circular path about; the pipe, substantially asnelly of the pipe during the Cutting opera- Vset; forth. v vtion,substantially 'as set forth.

29. In apipe-cutting mechanism, in eombi- Signed at New York, N. i/this11th day ntion, 'one or'more cutters, a carrier for of February, 1901. vthe same, aix' automatic friction device for FREDERICK XV. STAFF. movingthe cutter or cutters into Contact Witnesses:

with the pipe and pressing the cutter or cup- JOHN A.' VILBUR, tersagainst-'the pipe, and automatic means'yl. HENRY 1D. WILLIAMS.

